Thanks for the replies/comments/suggestions. I would like to do it mechanically but there is a limit to the number of coins inserted and any further coins inserted in the system will be moved to an extra case. If using the first design what will happen is if the specified number of coins has been reached for each type of coin the slots will not open, guiding the extra inserted coins down to an extra case. Our currency has 3 Types of Coins, hence the 4 pathways in the second design.
If you have any other comments please do post